20.500.12556/RUL-177559 Eksperimentalna primerjava deformacije 3D natisnjenih avksetičnih struktur Experimental comparison of deformation of 3D printed auxetic structures V diplomskem delu je predstavljena eksperimentalna primerjava mehanskega odziva dveh različnih avksetičnih struktur. Avksetični materiali izkazujejo negativni Poissonov koeficient, kar pomeni, da se ob natezni obremenitvi širijo tudi v prečni smeri. V okviru naloge smo vzorce dveh različnih avksetičnih geometrij izdelali z aditivnimi tehnologijami, in sicer s 3D tiskom polimera in 3D tiskom kovinskega prahu. Eksperimentalni del je vključeval tlačne in trgalne preizkuse ter preizkuse z vdiranjem konice, pri katerih so bile merjene sile in pomiki, s hitro kamero pa smo zabeležili način deformacije. Obe geometriji sta v okviru tlačnih preizkusov izkazali avksetično obnašanje, sama geometrija pa vpliva na obnašanje pri deformaciji. Takšne strukture imajo velik potencial za uporabo na področjih, kjer je pomembna absorpcija energije, udarna odpornost in prilagodljivost konstrukcij. In this thesis, an experimental comparison of the mechanical response of two different auxetic structures is presented. Auxetic materials exhibit a negative Poisson’s ratio, meaning that they expand laterally when subjected to tensile loading. Within the scope of this work, samples of two different auxetic geometries were manufactured using additive technologies, namely polymer 3D printing and metal powder 3D printing. The experimental part included compression and tensile tests as well as indentation tests, during which forces and displacements were measured. A high-speed camera was used to record the deformation behavior. Both geometries exhibited auxetic behavior under compression tests, while the geometry itself influenced the deformation response. Such structures have great potential for applications in areas where energy absorption, impact resistance, and structural adaptability are of key importance. avksetične strukture 3D tisk mehanski odzivi absorpcija energije deformacije eksperimentalna analiza auxetic structures 3D printing mechanical responses energy absorptions deformations experimental analysis true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-12-24 08:30:24 2025-12-24 08:30:31 2026-01-05 09:59:55 0000-00-00 00:00:00 2025 0 0 XX, 53 str. 2025 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 004.925.84:539.37(043.2) 282939 263363331 46422.pdf 46422.pdf 1 4B819236E405BC81D8E0BB42A8CA815E 0b18707d63fa12d1bff4d03db24b2c0b4146eedb9119ede861fd2663e2405f9c faf15ca6-e099-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=224632 Fakulteta za strojništvo 0 0 0